the Logitech Wireless Mouse M515 features a sealed bottom case that lets you mouse around on soft surfaces without snagging. That means it won't collect bits of fuzz around the sensor when dragging it across the couch, bed, or a trouser-clad thigh. Naturally, it can also be used on more traditional computing surfaces, too. The M515 boasts up to two-years of battery life thanks, in part, to a hand-detection sensor that causes the mouse to sleep anytime it's not being held. Rounding out the list of features is Logitech's Hyper-Fast scrolling wheel and Unifying USB micro receiver required for the laptop or home theater PC you wish to control. Look for the M515 to ship to Europe in April for £49.99 -- that's about $80 converted, but you'll likely find it for a lot less whenever it hits US retail.